A flat display panel uses a DC gas-discharge and has flat discharge display elements, which elements have three electrodes composed of a cathode, a grid and an anode and a discharge stabilizing resistor. An auxiliary discharge is formed by using the discharge stabilizing resistor, the cathode and the grid in an auxiliary discharge space defined between the grid and the cathode. A main gas discharge is formed in a main discharge space defined between the anode and the grid by mainly using electrons in a plasma, produced in the auxiliary discharge space, which are diffused and accelerated into the main discharge space. The flat discharge panel, in order to provide a memory function in the main discharge is driven by the use of pulse voltage applied between the anode and the grid.
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